Resilient support for bobbins



Nav. 27, 1928. 1,692,967

R. G. TURNER RESILIENT SUPPORT FOR BOBIIS Filed Oct. 19, 1926 Patented Nov. 27, 1928.

UNITED STATES PATENT OFFECE.

BICI-IARD GREENLEAF TUItlTERf,v OF WORCESTER., MASSACHUSETTS, ASSIGNOR T0 CROMPTON & KNOWLES LOOM WORKS, OF YVORCESTER, MASSACHUSETTS, A COR- PORATION OF MASSACHUSETTS.

RESILIENT SUPPORT FOR BOBBNS.

Application led October 19, 1926.

This invention relates to improvements in bobbin supports for looms more particularly,

though not necessarily, of the multi-color type, and it is the principal object of the invention to make the giveway of resilient material such as rubber.

Tn multi-color weft replenishing looms the bobbins are arranged in stacks according to distinctive characteristics such as color or size of weft, and there is located at the bottom of each stack a so-called cradle which at the time of transfer rocks to release the lowermost bobbin of the associated stack. When released the bobbin rolls down a pair of spaced supports, one for thebutt and one for the tip of the bobbin, to a position centrally located under the magazine where it can be inserted into the depleted shuttle by, appropriate t-ransfer mechanism. lt is necessary of course to hold the bobbin momentarily before transfer by means which will yield to Y usually been made ofmetal and mounted to r yield against spring action. As the bobbin reaches the bottom ofv one pair of inclined supports it is prone to roll up on the opposite pair, and this tendency I find is corrected very largely by making the givewaysof rubber, this material absorbing in itself the slight shock due to the impact of the downwardly moving bobbin.

It is a further and more specific object of my invention to provide a bobbin giveway having a body formed of resilient material such as rubber and a substantially rigid mass held thereto and affording means by which the support may be held to the magazine.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawings wherein I have shown a convenient embodiment of my invention,

Fig. 1 is a vertical section through the lower portion of a multi-color weft replenishing mechanism having my invention applied thereto, looking toward the tip ends of the bobbins,

Fig. 2 is a fragmentary top plan view taken in the direction of arrow 2, Fig. 1, and showing the supports,

Serial No. 142,720.

Fig. 3 is an enlarged section on line 3 3 of Fig. 1 looking in the direction of the arrows, and

Fig. 4 is a perspective view showing one of the giveways forming the subject matter of my invention.

Referring to the drawings it will be seen that I have provided a magazine frame 10 having a plurality of vertical parallel grooves 11 which receive the tip ends 12 of the bobbins B. A cradle 13 is located at the bottom of each of the stacks of bobbins and is rocked by mechanism not shown but well understood to move the bobbins toward transfer position. Thread slots 14 may be provided through which t-he threads extend from the bobbins to the thread holder not shown). The frame has a pair of downwardly extending inclined arms 15 which are preferably metallic and engage the tips of the bobbins to prevent endwise movement thereof. A transferrer arm indicated in section at 16 may be of the usual form and moves downwardly to engage a bobbin in transfer position and insert the same into shuttle S. The parts described may be of the usual form and for a further understanding of the same reference maybe had to Patent No. 1,030,7 48.

y There lis usually provided two pairs of supports for the bobbin having downwardly inclinedupper faces along which the bobbin may roll toward transfer position. As previously stated, it is the object of my invention to provide an improved form of yielding support made of a resilient material such as rubber, and in carrying my invention into effect I provide a pair of supports indicated at 30, said supports having upper guide surfaces 31 and vertical walls 32 which extend close to the arms 15. The supports may be formed as shown in Fig. 4 by having an offset lug 33 in which has been cast a metallic block 34 (see Fig. 3), said block having longitudinal grooves 35 into which the rubber flows during the molding process. Screws 36 extend through the block 34 and are threaded into bosses 37 which extend outwardly from the arms 15.

When a bobbin is released from one or another ofthe cradles 13 it will fall so that the tip end 12 thereof will engage the Vupper surface 31 ofthe support 30 thereof, after which the bobbin will roll downwardly to the position indicated in Fig.'1. The transferrer arm 16 will thereafter descend by mechanism not shown but set forth in the aforesaid patent, and the rubber supports will be deflected from the position shown in full lines tothe position shown in dotted lines in Fig. 1, thus pernitting the bobbin to pass into the shuttle I find that with the usual form of metallic support, when a bobbin is released from one of the outer stacks and rolls downwardly toward transfer position along one of the supports, it has a tendency to rebound and roll up the other support. This tendency is overcome by the use of supports made of rubber as set forth herein, the natural resilience of this material absorbing the shock and tending to hold the bobbins in proper position without rebounding. As shown in Fig. 1 I prefer to extend the upper edges of arms 15 above the horizontal faces 31 of the supports so that as the bobbins rollA down from the cradles the threads will not be retarded by the surface of the rubber.

Although I have shown a metallic block 311 for securing the supports in place, yet I do not wish to be limited to this construction, and although I have shown the supports for the tips of the bobbins, yet the invention can also be applied to supports for the butts of the bobbins.

From the foregoing it will be seen that I have provided a support for bobbins, the support being made of resilientmaterial such as rubber and yielding to permit passage of the bobbin into the depleted shuttle, the supports returning because of their own resilience to normal bobbin holding position. Furthermore, it will be seen that the downward movement of the bobbin along one of the supports will be arrested and rebound thereof efectually prevented by engagement with the other support by reason of the nature of the material of which said supports are made. It will also be noted that the arms 15 have the upper surfaces thereof somewhat above the surfaces 31 so that the ends of the filling which extend from the bobbin through theslots 14 will not be interfered with by the surface of the rubber.

Having thus described my invention it will be apparent that changes and modifications may be made therein by 4those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limited to the details herein disclosed but what I claim is:

1. In a weft replenishing mechanism having a supply of bobbins and a transferrer mechanism, a frame forming part of the replenishing mechanism, a pair of bobbin supports located under the transferrer mechanism and inclined downwardly and toward each other and affording a support for u bobbin in transfer position, said supports being formed of rubber and having portions thereof held in iixed contact with a part of the frame, each support being` compressible in the direction of its length due to the inherent resilience thereof.

2. In a weft replenishing mechanism having a supply of bobbins and a transferrer mechanism, a frame forming part of the replenishing mechanism, means located under the supply of bobbins to support the bobbin in transfer position, said means including a yieldable member formed of rubber, and held in fixed position relatively to the frame, and an arm formed on the replenishing mechanism and havin a surface located above the top of the rub er support along which the thread may slide as it extends from the bobbin.

3. A bobbin support made of rubber for a weft replenishing mechanism comprising a bobbin engaging surface inclined when t-he support is in normal position, said support having provision for being secured to the replenishing mechanism and being compressible in the direction of its length due to the inherent resilience thereof.

4f. In a weft replenishing mechanism having a supply of bobbins and a t'ransferrer Vmechanism, a pair of bobbin supports located under the transferrer mechanism and extending downwardly in an inclined direction toward each other and Vaffording a support for the bobbin in transfer position, at least one of said supports being fixed with respect to the replenishing mechanism and made of rubber and being compressible in the direction of its length due to the inherent resilience thereof to yield when engagedpby an improperly positioned bobbin.

5. In a weft replenishing mechanism having a supply of bobbins and a transferrer 4mechanism, a bobbin support located under the transferrer mechanism inclined downwardly to afford a support for abobbin in transfer position, a core formed as part of the support secured in fixed position relatively to the replenishing mechanism, and a. bobbin engaging part of the support carried by the core and held normally in fixed position relatively yto the replenishing mechanism, said bobbin engaging part being made of soft rubber and being compressible in the direction of its length when engaged by an improperly placed bobbin due to its inherent resilience.

6. In a weft replenishing mechanism, a bobbin support located to position a bobbin for transfer, a core forming part of the support held in fixed relation with respect to the replenishing mechanism, and a soft rubber bobbin engaging and supporting part held'to the core and being` compressible in the direction of its length due to the inherent resilience thereof when engaged by an improperly placed bobbin.

7 In a weft replenishing mechanism, a bobbin support located to position a bobbin for transfer, a soft rubber element forming part of the support and being compressible in the direction of its length due to the inherent resilience thereof when engaged by an improperly placed bobbin, and a rigid attaohing member secured to the replenishing mechanism and having the rubber element supported thereon.

In testimony whereof I have hereunto aflixed my signature.

RICHARD GREEN LEAF TURNER. 

